The lines of the small columns traced by Stuart, are sufficiently evident, but they were probably parts of the church, not of the temple; for besides that their diminutive size renders them unsuitable for the internal structure of such a building, and that their remaining fragments are of very indifferent workmanship, their situation does not correspond with the division of the marble slabs, which in an edifice so regularly and systematically constructed, is alone a sufficient reason for rejecting them. It may seem remarkable that the original columns should not have left on the pavement more distinct traces of their existence; but while the Greeks united with wooden blocks, and sometimes by other means, the different portions of the column, they placed the lowest part, without preparation, on the smooth pavement. In some instances, in the temple of Theseus, less than half the column remains, and not the slightest indication is visible on the pavement to shew that the other half ever existed. Within the sinking of the pavement already mentioned, we find again the eight-inch marble paving, but in one part slabs of limestone occupy its place. These are supposed to have supported the statue of the goddess. Mr. B. very justly observed, that where every thing is thus of white marble, a statue of that material would have wanted its just consequence. It was necessary to employ a more expensive substance to give it sufficient relief in the imagination. A considerable portion of the paving remains in its place, but some has been removed, and in the opisthodomus a large slab of marble moulded on the edge, appeared underneath the pavement, which must have been buried at the time of the erection of the temple. Before leaving the inside, I must conduct you up a staircase, which the Turks have made in a little tower at the south-west angle of the building. We may by its means observe many particulars, which are not so easily discernible from below. The examination of the Athenian edifices leads to the conclusion, that the white Pentelic marble was obtainable in slabs of considerable length and breadth, but that the thickness was more limited. In the walls of the cell of the Parthenon, the courses are of 1 foot 8 inches and two thirds. In the Erectheum and the Propylæa, they are somewhat less. When a greater width is required, either to form a plinth course, or to cover the opening of a doorway, the slab is uniformly set on edge.